A certain mine produces $2.0 \times 10^8 \mathrm{~kg}$ of copper from chalcopyrite ( $\mathrm{CuFeS}_2$ ) each year. The ore contains only 0.80 percent Cu by mass. (a) If the density of the ore is $2.8 \mathrm{~g} / \mathrm{cm}^3$, calculate the volume (in $\mathrm{cm}^3$ ) of ore removed each year. (b) Calculate the mass (in kg ) of $\mathrm{SO}_2$ produced by roasting (assume chalcopyrite to be the only source of sulfur).